A8698: Wide Input Voltage 3.0 A Step Down Regulator


These parts are discontinued. Samples are no longer available. For new customers or new applications, please contact Allegro. Date of status change: December 2, 2014.

The A8698 is a constant off-time current mode step-down regulator with a wide input voltage range. Regulation voltage is set by external resistors, to output voltages as low as 0.8 V.

The A8698 includes an integrated power DMOS switch to reduce the total solution footprint. It also features internal compensation, allowing users to design stable regulators with minimal design efforts.

The off-time can be set with an external resistor, allowing flexibility in inductor selection. Additionally, the A8698 has a logic level enable pin which can shut the device down and put it into a low quiescent current mode for power sensitive applications.

Applications include:

  • Applications with 8 to 25 V input
  • Consumer electronics, networking equipment
  • 12 V lighter-powered applications (portable DVD, etc.)
  • Point of Sale (POS) applications

The A8698 is supplied in a low-profile 8-lead SOIC with exposed pad (package LJ).

Top Features

  • 8 to 25 V input range
  • Integrated DMOS switch
  • Adjustable fixed off-time
  • Adjustable output

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
A8698ELJTR-T 8-lead SOIC -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.


The A8698 is supplied in a low-profile 8-lead SOIC with exposed pad (package LJ).

LJ SOIC with exposed pad 8 pin

Design Support Tools

Demo Board

Gerber Files

Evaluation Board for A8698 is available upon request. Please contact your local representative.

Allegro MicroSystems, LLC provides Gerber files for reference only. Any material, information, or instructions are provided AS IS without warranty of any kind. It is the responsibility of the User(s) to optimize any Printed Circuit Board (PCB) layout, as well as the selection of any components, for the specific application of the User(s).